Home / 87,309.81-130,907.34-42,319.26

Finding the Fourth Proportional to 87,309.81, 130,907.34 and 42,319.26

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Solution

The fourth proportional to 87,309.81, 130,907.34 and 42,319.26 is: 63,451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,309.81 : 130,907.34 = 42,319.26 : x
  2. Step 2: Convert to fraction form
    87,309.81/130,907.34 = 42,319.26/x
  3. Step 3: Cross multiply
    87,309.81x = 130,907.34 × 42,319.26
  4. Step 4: Simplify right side
    87,309.81x = 5,539,901,757.37
  5. Step 5: Solve for x
    x = 5,539,901,757.37/87,309.81
  6. Step 6: Final answer
    x = 63,451.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.